• 2024-06-23Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through
     原因是:Property'sqlSessionFactory'or'sqlSessionTemplate'arerequired,检查一下这两个类是干什么的:SqlSessionFactory是MyBatis的重要对象之一,是创建SqlSession的工厂。SqlSessionTemplate是MyBatis-Spring的核心,是MyBatis为了接入Spring提供的Bean,这个
  • 2024-06-21Dragon Boat Festival Revised
    ShortTripIwenttoJiujianginJiangxiProvincewithmyroommate.Wedepart!Afteranhouronthemetro,weboardedthetrainasthebeginningofourpleasanttravel.Beautifulsceneryleapedtotheeyesthroughthetrainwindow,whichisoneoftherea
  • 2024-06-12Unit 6 - Disappearing Through The Skylight
    Unit6-DisappearingThroughTheSkylightDisappearingThroughTheSkylightOsborneBennettHardisonJr.Scienceiscommittedtotheuniversal.Asignofthisisthatthemoresuccessfulasciencebecomes,thebroadertheagreementaboutitsbasicconcept
  • 2024-06-03Error creating bean with name 'userController': Unsatisfied dependency expressed through f
    SSM整合项目搭建时,项目启动报错,报错内容如下:org.springframework.beans.factory.UnsatisfiedDependencyException:Errorcreatingbeanwithname'userController':Unsatisfieddependencyexpressedthroughfield'userService';nestedexceptionisorg.springfra
  • 2024-05-212024-05-21 英语学习纪要
    DiamondHeartlyricsHello,sweetgriefIknowyou'llbethedeathofmeFeellikethemorningafterecstasyIamdrowninginanendlessseaHello,oldfriendHere'sthemiserythatknowsnoendSoI'mdoingeverythingIcanTomakesureI
  • 2024-05-20当装饰者模式遇上Read Through缓存,一场技术的浪漫邂逅
    在《经验之谈:我为什么选择了这样一个激进的缓存大Key治理方案》一文中,我提到在系统中使用的缓存是旁路缓存模式,有读者朋友问,有没有用到过其他的缓存模式,本文将结合一个我曾经工作中的案例,使用装饰者模式实现ReadThrough缓存模式,助你轻松掌握设计模式和缓存。一、缓存模式不说废
  • 2024-05-17C122 李超树合并+DP CF932F Escape Through Leaf
    视频链接:C122李超树合并+DPCF932FEscapeThroughLeaf_哔哩哔哩_bilibili   C65【模板】线段树合并P4556[Vani有约会]雨天的尾巴-董晓-博客园(cnblogs.com)CF932FEscapeThroughLeaf#include<iostream>#include<cstring>#include<algorithm>using
  • 2024-04-29Jumping Through Segments
    题目:链接:https://www.luogu.com.cn/problem/CF1907D大致思路:二分模拟关键点:①确定二分区间:最小值为第一次跳的左边界,最大值为连续两个线段的最远值(注意,应该有四种情况:左1减右1,左2减右1,左1减右2,左2减右2,取绝对值);②确定如何模拟:递推:假定跳跃长度≤k(mid),那么下一个最远就是ra+
  • 2024-04-25mORMot2 定义多对多关系
    mORMot2定义多对多关系处理“hasmany”和“hasmanythrough”关系时,主要涉及到的是多对多关系的数据库设计和管理。以下是对您提供的文本的技术性翻译和解释:多对多关系是通过一个专门为这种关系创建的表来追踪的,将这个关系转变为两个指向相反方向的一对多关系。默认情况下,
  • 2024-04-20Reflective journal II
    (1)Firstofall,Ineedtochooseapeopletopresentate.Then,Ichosesomeaspectsofherandwrotedowndetaileddiscriptionofthese.Atthesametime,Iaskedherwhetherhermindbeingpresentated.Iflippedthroughmyalbumbutcouldnotfindanyphotos
  • 2024-03-25Reflective Journal 1
    Inthepasttwoweeks,Ihavelearnedtoinfertheemotionsofcharactersfromdetails.Forexample,inthefirstclass,weobservedtheprotagonist'semotionsthroughthedetailsofthevideo"TheNecklace",anddiscoveredherunwillingnes
  • 2024-03-24My favourite movie
    Myfavouritemovieis"Flipped",directedbyRobReiner.Themoviehasbeenwidelypraisedforitswarmnarrativeanddelicatedepictionofteenages'growth.Hereisananalysisofthefilm'sdetails:Music:Thefilmscorewascompose
  • 2024-02-27CF932F Escape Through Leaf【DP,李超线段树】
    有一颗\(n\)个节点的树,根节点为\(1\)。每个节点有两个权值,第\(i\)个节点的权值为\(a_i,b_i\)。你可以从一个节点跳到它的子树内任意一个节点上。从节点\(x\)跳到节点\(y\)一次的花费为\(a_x\timesb_y\)。跳跃多次走过一条路径的总费用为每次跳跃的费用之和。求每个节
  • 2024-02-18A trip through the Graphics Pipeline 2011: Index
    原文地址https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-graphics-pipeline-2011-index/Welcome.ThisistheindexpageforaseriesofblogpostsI’mcurrentlywritingabouttheD3D/OpenGLgraphicspipelinesasactuallyimplementedbyGPUs.Alot
  • 2024-02-11十六、Django的ORM(二)
    1、DecimalFieldDecimalField保存浮点型数据比FloatField精确,因为它是以字符串来保存,而FloatField,数据越长,保存得越不精确。2、索引(命中索引)正确使用SQL语言,使查找数据时,用到索引username=models.CharField(...#db_index=True数据库中字段是否可以建立
  • 2024-01-24FireBird DataType
    MSSQLVerDataTypeFirebirdMSSQLdefinitionandcomments6.5bigintINT648-byteintegertype.6.5binaryCHARFixed-lengthbinarydatawithamaximumlengthof8,000bytes.In6.5,maximumwas255.6.5bitCHAR(1)Inte
  • 2024-01-13Eloquent 模型使用详解 Has One Through 远程一对一
    远程一对一也好,经过型,穿过型一对一也好,都能表示这种模型的关联方式:一种非直接的关系定义这里使用官方的例子:
  • 2023-12-11D. Jumping Through Segments
    1、首先,假设我们已知一个k,若其符合题意,那么第一次移动时可达区间为[-k,k],我们只需判断这个区间和[L1,R1]是否有交区间。然后我们取出这个交区间【left,right】。接下每次移动,我们都在上一次得到的区间基础上得到新的可移动区间【left-k,right+k】,之后再和【Li,Ri】取交区间。如果
  • 2023-12-08D. Jumping Through Segments
    题目传送门我是彩笔二分trigger:存在一个最小值,使得当大于最小值时一定成立,小于最小值时一定不成立#include<bits/stdc++.h>usingnamespacestd;intn;intl[200005]={0},r[200005]={0};intss(intlen){intnow=0;intlp=0,rp=0;//代表第i此行动后能到达的有效
  • 2023-11-08[CF1588F] Jumping Through the Array
    不妨认为\(n,q\)同阶。考虑根号重构。如果没有第3种操作的话,我们每\(\mathcalO(\sqrtn)\)操作整体更新一次,每个询问只需要考虑块内的修改所在置换环上有多少\([l,r]\)内的数。这个是容易\(\mathcalO(n\sqrtn)\)做的。然后考虑置换环会变怎么办。注意到一个块内真
  • 2023-10-31water pollution
    Fromlargepiecesofgarbagetoinvisiblechemicals,variouspollutantseventuallyenterourplanet'slakes,rivers,streams,groundwater,andeventuallyintotheocean.Waterpollution,coupledwithdrought,lowefficiency,andhumanexplosions,has
  • 2023-10-29Water Pollution
    causes:1. Industrial pollution: industrial wastewater, which contains many pollutants and complex compositions, is not only not easy to purify in water, but also difficult to treat. 2. Agricultural pollution: most of the pestic
  • 2023-10-17Go - Serving Through HTTPS
    Problem: YouwanttoserveyourwebapplicationthroughHTTPS.Solution: Usethehttp.ListenAndServeTLSfunctiontoserveyourwebapplicationthroughHTTPS. HTTPSisnothingmorethanlayeringHTTPontopoftheTransportSecurityLayer(TLS).Thenet
  • 2023-10-15Triangle Graph Interest Network for Click-through Rate Prediction
    目录概TGINMotivation:Triangle的重要性Model代码JiangW.,JiaoY.,WangQ.,LiangC.,GuoL.,ZhangY.,SunZ.,XiongY.andZhuY.Trianglegraphinterestnetworkforclick-throughrateprediction.WSDM,2022.概'图'用于精排,但是这里的图的使用主要是基于
  • 2023-10-13Trying to backward through the graph a second time
    原因是把创建loss的语句loss_aux=torch.tensor(0.)放在循环体外了,可能的解释是第一次backward后把计算图删除,第二次backward就会找不到父节点,也就无法反向传播。参考:https://stackoverflow.com/questions/55268726/pytorch-why-does-preallocating-memory-cause-trying-to-backw